Given a scalar or vector x, return the square of each element.
Example
x = [7 2] answer = [49 4]
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There's a problem is test#2.
you should write x and y_correct as vectors / x=[2 3 4] --> y_correct=[4 9 16]
When you write your problem, there's a section to actually test your test suite. What not do that before publishing the problem?
Sorry for inconvenience... now i have learnt to create problems...